Java tutorial
/******************************************************************************* * Copyright (c) 2012-2015 Codenvy, S.A. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Codenvy, S.A. - initial API and implementation *******************************************************************************/ package org.eclipse.core.resources; import com.google.inject.Inject; import com.google.inject.Provider; import com.google.inject.Singleton; import com.google.inject.name.Named; import org.eclipse.che.api.project.server.ProjectManager; import org.eclipse.che.api.project.server.ProjectRegistry; import org.eclipse.che.core.internal.resources.Workspace; import org.eclipse.core.filesystem.EFS; import org.eclipse.core.internal.utils.Messages; import org.eclipse.core.runtime.IStatus; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.annotation.PostConstruct; /** * @author Evgen Vidolob */ @Singleton public class ResourcesPlugin { private static final Logger LOG = LoggerFactory.getLogger(ResourcesPlugin.class); /** * Common prefix for workspace preference names. * @since 2.1 */ private static final String PREF_DESCRIPTION_PREFIX = "description."; //$NON-NLS-1$ /** * Unique identifier constant (value <code>"org.eclipse.core.resources"</code>) * for the standard Resources plug-in. */ public static final String PI_RESOURCES = "org.eclipse.core.resources"; //$NON-NLS-1$ /** * Name of a preference for configuring whether the workspace performs auto- * builds. * * @see IWorkspaceDescription#isAutoBuilding() * @see IWorkspaceDescription#setAutoBuilding(boolean) * @since 2.1 */ public static final String PREF_AUTO_BUILDING = PREF_DESCRIPTION_PREFIX + "autobuilding"; //$NON-NLS-1$ /** * Name of a preference for configuring the maximum number of times that the * workspace should rebuild when builders affect projects that have already * been built. * * @see IWorkspaceDescription#getMaxBuildIterations() * @see IWorkspaceDescription#setMaxBuildIterations(int) * @since 2.1 */ public static final String PREF_MAX_BUILD_ITERATIONS = PREF_DESCRIPTION_PREFIX + "maxbuilditerations"; //$NON-NLS-1$ /** * Name of a preference for configuring whether to apply the specified history size policy. * * @see IWorkspaceDescription#isApplyFileStatePolicy() * @see IWorkspaceDescription#setApplyFileStatePolicy(boolean) * @since 3.6 */ public static final String PREF_APPLY_FILE_STATE_POLICY = PREF_DESCRIPTION_PREFIX + "applyfilestatepolicy"; //$NON-NLS-1$ /** * Name of a preference for configuring the maximum number of milliseconds a * file state should be kept in the local history * * @see IWorkspaceDescription#getFileStateLongevity() * @see IWorkspaceDescription#setFileStateLongevity(long) * @since 2.1 */ public static final String PREF_FILE_STATE_LONGEVITY = PREF_DESCRIPTION_PREFIX + "filestatelongevity"; //$NON-NLS-1$ /** * Name of a preference for configuring the maximum number of states per * file that can be stored in the local history. * * @see IWorkspaceDescription#getMaxFileStates() * @see IWorkspaceDescription#setMaxFileStates(int) * @since 2.1 */ public static final String PREF_MAX_FILE_STATES = PREF_DESCRIPTION_PREFIX + "maxfilestates"; //$NON-NLS-1$ /** * Name of a preference for configuring the maximum permitted size of a file * to be stored in the local history * * @see IWorkspaceDescription#getMaxFileStateSize() * @see IWorkspaceDescription#setMaxFileStateSize(long) * @since 2.1 */ public static final String PREF_MAX_FILE_STATE_SIZE = PREF_DESCRIPTION_PREFIX + "maxfilestatesize"; //$NON-NLS-1$ /** * Name of a preference for configuring the amount of time in milliseconds * between automatic workspace snapshots * * @see IWorkspaceDescription#getSnapshotInterval() * @see IWorkspaceDescription#setSnapshotInterval(long) * @since 2.1 */ public static final String PREF_SNAPSHOT_INTERVAL = PREF_DESCRIPTION_PREFIX + "snapshotinterval"; //$NON-NLS-1$ /** * Name of a preference for configuring whether the workspace performs auto- * refresh. Auto-refresh installs a file-system listener, or performs * periodic file-system polling to actively discover changes in the resource * hierarchy. * @since 3.0 */ public static final String PREF_AUTO_REFRESH = "refresh.enabled"; //$NON-NLS-1$ /** * Name of a preference for configuring whether out-of-sync resources are automatically * asynchronously refreshed, when discovered to be out-of-sync by the workspace. * <p> * This preference suppresses out-of-sync CoreException for some read methods, including: * {@link IFile#getContents()} & {@link IFile#getContentDescription()}. * </p> * <p> * In the future the workspace may enable other lightweight auto-refresh mechanisms when this * preference is true. (The existing {@link ResourcesPlugin#PREF_AUTO_REFRESH} will continue * to enable filesystem hooks and the existing polling based monitor.) * </p> * See the discussion: https://bugs.eclipse.org/303517 * @since 3.7 */ public static final String PREF_LIGHTWEIGHT_AUTO_REFRESH = "refresh.lightweight.enabled"; //$NON-NLS-1$ /** * Name of a preference for turning off support for linked resources. When * this preference is set to "true", attempting to create linked resources will fail. * @since 2.1 */ public static final String PREF_DISABLE_LINKING = PREF_DESCRIPTION_PREFIX + "disableLinking";//$NON-NLS-1$ /** * Name of a preference for configuring the order projects in the workspace * are built. * * @see IWorkspaceDescription#getBuildOrder() * @see IWorkspaceDescription#setBuildOrder(String[]) * @since 2.1 */ public static final String PREF_BUILD_ORDER = PREF_DESCRIPTION_PREFIX + "buildorder"; //$NON-NLS-1$ /** * Name of a preference for configuring whether to use the workspace's * default order for building projects. * @since 2.1 */ public static final String PREF_DEFAULT_BUILD_ORDER = PREF_DESCRIPTION_PREFIX + "defaultbuildorder"; //$NON-NLS-1$ /** * Name of a preference indicating the encoding to use when reading text * files in the workspace. The value is a string, and may * be the default empty string, indicating that the file system encoding should * be used instead. The file system encoding can be retrieved using * <code>System.getProperty("file.encoding")</code>. * There is also a convenience method <code>getEncoding</code> which returns * the value of this preference, or the file system encoding if this * preference is not set. * <p> * Note that there is no guarantee that the value is a supported encoding. * Callers should be prepared to handle <code>UnsupportedEncodingException</code> * where this encoding is used. * </p> * * @see #getEncoding() * @see java.io.UnsupportedEncodingException */ public static final String PREF_ENCODING = "encoding"; //$NON-NLS-1$ /** * The workspace managed by the single instance of this * plug-in runtime class, or <code>null</code> is there is none. */ private static Workspace workspace = null; private static String indexPath; private static String workspacePath; private static String pluginId; @Inject public ResourcesPlugin(@Named("che.jdt.workspace.index.dir") String indexPath, @Named("che.user.workspaces.storage") String workspacePath, Provider<ProjectRegistry> projectRegistry, Provider<ProjectManager> projectManager) { ResourcesPlugin.indexPath = indexPath; ResourcesPlugin.workspacePath = workspacePath; pluginId = "cheWsPlugin"; EFS.setWsPath(workspacePath); workspace = new Workspace(workspacePath, projectRegistry, projectManager); } public static String getPathToWorkspace() { return workspacePath; } public static String getIndexPath() { return indexPath; } public static String getPluginId() { return pluginId; } @PostConstruct public void start() { } /** * Returns the workspace. The workspace is not accessible after the resources * plug-in has shutdown. * * @return the workspace that was created by the single instance of this * plug-in class. */ public static IWorkspace getWorkspace() { if (workspace == null) throw new IllegalStateException(Messages.resources_workspaceClosed); return workspace; } public static void log(Exception e) { LOG.error(e.getMessage(), e); } public static void log(IStatus status) { LOG.error(status.getMessage(), status.getException()); } /** * Returns the encoding to use when reading text files in the workspace. * This is the value of the <code>PREF_ENCODING</code> preference, or the * file system encoding (<code>System.getProperty("file.encoding")</code>) * if the preference is not set. * <p> * Note that this method does not check whether the result is a supported * encoding. Callers should be prepared to handle * <code>UnsupportedEncodingException</code> where this encoding is used. * * @return the encoding to use when reading text files in the workspace * @see java.io.UnsupportedEncodingException */ public static String getEncoding() { String enc = null; // getPlugin().getPluginPreferences().getString(PREF_ENCODING); // if (enc == null || enc.length() == 0) { enc = System.getProperty("file.encoding"); //$NON-NLS-1$ // } return enc; } }